Ratchet screw-punch.



I Y W. BUTLER.

BATGHET SCREW VPUNGH. APPLICATION FILED HAP-.19, 190a Patented Jan. 26, 1909.

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WILLIAM BUTLER, OF SPRINGFIELD, MISSOURI, ASSIGNOR OF ONE-HALF TO JOHN W. MUNFORD, OF SPRINGFIELD, MISSOURI.

RATCIET SCREW-PUNCH.

To all whom it may concern:

Be it known that I, WILLIAM BUTLER, a citizen of the United States, residing at Springfield, in the county of Greene and State of Missouri, have invented certain new and useful Improvements in Ratchet Screw- Punches, of which the following is a specification.

This invention relates to punches, and more particularly to ratchet screw punches, and has for its object to provide such an article which may be easily carried and which will be suitable for heavy work.

Another object is to provide such an article which will be especially adapted to use for punching fish bar plates, and for'punching steel rails.

Another object is to provide such an article which will be of exceedingly simple construction.

Another object is to provide such an article Which may be easily manufactured at a low cost from stock material.

Other objects and advantages will be apparent from the following description and it will be understood that changes in the specific structure shown and described may be made within the scope of the claims, without departing from the spirit of the invention.

In the drawings forming a portion of this specification and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a sectional view laterally through the punch, Fig. 2 is a sectional view on the line 22 of Fig. 1, Fig. 3 is a vertical sectional view through the case show ing the engagement of the pinion with the screw, Fig. 4 is a detail View of the handle and ratchet portion, Fig. 5 is a side view of the punch with all parts assembled.

Referring to the draudngs, there is shown a punch comprising an anvil portion and a screw carrying portion 11 in spaced relation therewith, the two parts being connected by a body ortion 13 having a handle on the rearward outer side thereof, as shown. A vertically extending circularopening 14 having an enlarged portion 15 at its upper end is formed in the anvil portion 10. The enlarged portion 15 carries removably seated therein a collar 16 of hardened metal having an opening 16 therethrough and arranged for renewal when necessary. The screw carrying arm 11 is provided with a vertically extending opening 17 threaded and having Specification of Letters Patent.

Application filed March 19, 1908.

Patented Jan. 26, 1909.

Serial No. 422,143.

engaged therein the screw punching member 18 the upper portion 19 of which is squared and engaged slidably through a pinion 20 seated upon a raised portion 11' at the top of the arm 11 having a similarly squared opening therethrough and provided with a circular boss 20 on its upper side.

The screw member 18 is provided with a hand wheel 21 at its upper end, and is provided with a circular threaded recess 22 at its lower end in which there is engaged an outwardly threaded circular collar 24 holding a punching disk 25 arranged for close sliding engagement through the opening 16. The upper portion of the base member is planed and provided with spaced recesses 26 and 27 inwardly of the opening 17. Two gears 60 are engaged upon a shaft 61 having its lower end pivoted in the recess 26, the upper of the gears 60 being the larger and meshed with the gear 20 engaged slidably upon the square portion of the screw 19. A pinion 29 is meshed with the lower of the gears 60, being secured upon a shaft 30 the lower end of which is seated in the recess 27, its opposite end extending upwardly to form a ratchet carrying portion 31. A gear case A is engaged around the moving parts just described and comprises side plates 32 secured to the upper side of the screw carrying arm 11 by means of bolts 33 engaged in the said arms through the openings 34 along the lower edges of the plates. A top plate 35 having spaced openings 36 and 37 registering with the recesses. 26 and 27 and having an enlarged opening 39 engaged around the boss 20 of the gear 21 is secured to the side plates 32 by means of bolts 33. The upper portion of the shaft 61 is engaged through the opening 36 and the upwardly extending portion of the shaft 30 is engaged through and projects outwardly of the opening 37. A collar 40 is secured to the shaft 30 inwardly of the top plates 35 by means of a set screw 41 to restrain the shaft against upward movement in the gear case. An operating handle B comprising a handle portion 43 and spaced arms 44 is pivoted upon the shaft 30 by means of registering openings 45 at the outer ends of the arm 44 and held in engagement thereon by means of a collar 46 having a set screw 47 engaged therethrough and impinging against the shaft 30. A ratchet wheel 48 is revolubly mounted on the shaft 30 between the arms 44. The lower one of the arms 44 is off-set from the axis of the handle 43 and is connected therewith by a laterally extending portion 44 having an opening 49 therethrough communicating with a circular recess 50 in the inner side thereof. It will be noted that the teeth of the ratchet wheel are square set. A pawl 51 is carriedby thehandle B in engagement with the ratchet wheel 48 having a square head beveled laterally from one of its sides to allow sliding movement of the teeth of the ratchet wheel 48 thereunder in one direction and having acircular 'portion 51 engaged within the recess 44, from which circular portion a reduced shank 53 extends through the opening 49 to engage slidably throughan-opening 54 in the outerend of a la'terallyprojecting arm 54 carried by the handle portion as shown. A

helical spring 56 is engaged around the shank between the laterally extending portion 44 and the arm 54. A reversing handle '56 is secured to the shank 53 outwardly of and adjacent to the recess 44 by means of aset screw 57, the spring bearing thereagainst to hold the pawl in engagement with the ratchet 48.

ated by'oscillation ofthe handle 43 w iich rotates the-ratchet wheel 48 byineans of the pawl, which movement is communicated by the gears to the screw'18 by means of which the work is accomplished. If the punch should be wedged in a'plate being punched, its operation may be reversed'by the turning of the reversing pawl, and disengagement thus effected.

What is claimed is: 1. A ratchet screw punch comprising a body portion having an anvil arm and a mandrel carrying arm disposed thereabove, said mandrel carrying arm having a vert1 cally extending threaded opening therethrough, a threaded mandrel engaged revolubly in said opening, said mandrel having its upper portion squared, a gear having a squared opening therethrough and engaged slidably upon said upper portion of the mandrel, a ratchet and pawl mechanism mounted upon said body portion, operative connection between the said ratchet mechanism and the said gear, said ratchet mechanismbeing arranged for reverse movement as desired, and an operating handle connected with said operating-mechanism.

2. In an article of the class described a body casting comprising an anvil arm havving a vertical opening therethrough, the upper end of which is enlarged, a hardened metal collar keyed to said enlarged portion, a mandrel carrying arm disposed over said anvil arm, a mandrel in threaded engagement therethrough and having its upper end portion-squared laterally, said mandrel having a threaded circular recess at its lower end, a nut engaged .in said recess, a :hard me'tal punching portion engaged sin said nut and arranged for sliding engagement through the collar inthe anvil portion, the-upperend portion ofsaid mandreLbeing. squared, agear having squared opening therethrough engaged slidably upon said upper portion of the mandrel, a ratchet operating mechanism carried by said casting, saidratchet mechanism being arranged for reverse .movement when desired, o erative connectionsibetween the ratchetmec' anism and the said gear and means for operating the ratchetmechanism '3. .A ratchet screw punch comprising a body casting includingan anvil armand a mandrel carrying :arm disposed .thereabove, a mandrel in threaded engagement through said mandrel carrying arm and having its upper end portion squared laterally, said mandrel arm having its upper end portion squared, a gear having asquare opening therethrough engaged slidably upon said squared portionof the mandrel, a shaft carried-revolubly by said body casting in spaced relation with the upper portionof the mandrel, operative connections between the shaft and the said gear, an operatingmember pivoted on :said shaft and comprising a handle portion and spaced arms carried thereby, said arms havingregistering openings at their-outer ends engaged pivotally on said-shaft, a ratchet wheel-having square set'teeth engaged'revolubly upon said shaft between the spaced armsof theoperating member andengaged with the ratchet for. rotation thereof when the operating member is oscillated said pawl being arranged toibe turnedto reverse the direction ofiits engagement with the ratchet, when desired.

4. In a ratchet mechanism, the combination-witha ratchet wheelhaving square set teeth, of aspring pressed pawl. disposed radially thereof, and having a beveled head, and'means forreversing said pawlto change the direction of its engagement with said ratchet wheel.

5. The combination with a ratchet-mech anism, of ahandle,-a ratchet wheel carried revolubly by said handle, saidratchet wheel having square set I peripheral teeth, a 7 spring pressed pawlmember carried slidably by and disposed longitudinally of said'handle, said pawl having a beveled engaging portion adapted to allow rotative movement of said :ratchet wheel thereunder in one K direction,

and adapted to check movement of said ratchet in the opposite direction, and means for rotating said pawl to reverse the direction of its engagement with said ratchet.

6. The combination with a ratchet punch having a sliding mandrel provided with a threaded recess in its end, of a centrally perforated externally threaded nut having an enlarged concentric recess therein, and engaged in said threaded recess, and a punch member having a laterally extending flange therearound disposed slidably in the opening through the nut, with the flange disposed in said recesses.

7. In an article of the class described the combination with a body member having a threaded opening therethrough, of a threaded mandrel member having a longitudinal extension therefrom of angular shape in cross section, a gear having a similar angular opening therethrough engaged slidably upon said extension, and means for rotating said gear.

In testimony whereof I aflix my signature, in presence of two witnesses.

l/VILLIAM BUTLER.

Witnesses:

ANDREW COLEMAN JARRETT, THOMAS B. JARRETT. 

